Best AI Memory Tools

Open-source AI memory platform that turns unstructured data into a knowledge graph for agents, with a managed cloud and MCP integration.

Key Features:

• •Workflow Runtime
• •Tool and API Connectivity
• •State and Context Handling

pgvector is an open-source PostgreSQL extension for storing embeddings and running vector similarity search with SQL. It is best for teams already using PostgreSQL that want semantic search, RAG retrieval, or AI memory without operating a separate vector database, while accepting PostgreSQL scaling and tuning tradeoffs.

Key Features:

• •Vector storage in PostgreSQL tables.
• •Multiple distance operators for similarity search.
• •HNSW graph indexing.